Optimal design of lattice wave digital fractional-order Butterworth filter

被引：2
|
作者：
Mahata, Shibendu [1 ]
Kar, Rajib [1 ]
Mandal, Durbadal [1 ]
机构：
[1] Natl Inst Technol, Dept Elect & Commun Engn, Durgapur, India
来源：
INTERNATIONAL JOURNAL OF CIRCUIT THEORY AND APPLICATIONS | 2021年 / 49卷 / 01期
关键词：
digital filter; fractional‐ order Butterworth filter; order filter; lattice wave digital filter; optimization;
D O I：
10.1002/cta.2902
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
This letter presents the design of digital fractional-order Butterworth filter (DFOBF) of order (n+alpha), where n is an integer, and alpha is an element of (0,1), from the perspective of optimal realization. The magnitude-frequency characteristic of the DFOBF is optimally modeled using the computationally efficient lattice wave digital filters (LWDFs). Design examples for the third- and fifth-order LWDF-DFOBFs with various values of n, alpha(,) and cut-off frequencies are presented.
引用
收藏
页码：213 / 220
页数：8
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